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Ortho Part B > Class 3 > Flashcards

Class 3 Flashcards

1
Q

Crowding problems are often associated with

A

Class I problems

Most people are class i

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2
Q

Over time both areches

A

Tend to get more crowding

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3
Q

Hispanics

A

Have more crowding

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4
Q

Classification of crowding based on

A

Facial form
Appropriate radiographs
Space analaysis

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5
Q

Very protrusive patients

A

Increased arch will make them more protrusive

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6
Q

When can you protrude teeth

A

When lips are incompetent in regards to maxillary and chin

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7
Q

Excess space usually no treatment unless

A

esthetics/trauma
Eruption problems
Pathology

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8
Q

Looped arched wire

A

Rectangular wire

2 point contact

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9
Q

Labial bow wire

A

One point contact

Round wire

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10
Q

2 appliances for incisor retraction

A

Looped arch wire

Labial bow

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11
Q

Finger spring to close diastema

A

Tipping

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12
Q

Closing diastema with arch wire

A

Bodily movement

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13
Q

Space management no tax

A

The consequences are ultimate crowding with a class I molar relationship

OR

Required expansion treatment with Class I molar relationships

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14
Q

Disking

A

Using with minor irrgeulatiry
Make true vertical reduionts
Possible sites are mesial and distal surface of primary canines and molars
Consider f varnish
Do NOT disk percent teeth in mixed dentin

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15
Q

Holding arches

A

Construct with ideal arch form
Soldered arches most reliable
Faciolingula discrpeneices resolve best
Some limitations as a tooth mover

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16
Q

LLHA controls

A

Arch form and coordination

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17
Q

Some biomechanics may require

A

adjustments of LLHA

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18
Q

LLHA can be used as

A

A retainer

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19
Q

LLHA can control

A

arch length and move teeth

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20
Q

band and loop

A

Difficult to place on primary molar

Can be distorted

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21
Q

Distal shoe

A

Only when there is a missing primary secondary molar prior to eruption of permanent 1st molar

60-66% successful

1 mm below margin ridge

Unilateral/bi

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22
Q

LLHA

A

Fixed removable not very stable very fragile

Keyhole shaped states always from premolars

23
Q

TPA

A

Maxillary transpalatal arch can be used when one side of the arch is broken but the other is not

24
Q

MxLHA

A

Not common can be used as long as not too much overbite

25
Nance
Anchorage off palatal portion
26
Lingual arch problems
Put it in before lower incisors erupted and can get caught
27
Moderate gernelzied space desicrepency < 4mm per arch
True shortage of space including leeway Tooth movement methods will create the space Prognosis and ability are unknown
28
Arch exapanison (not palatal )
expand arch circumference and create and create 4 mm space
29
Arch expansion based on
Lip and incisors a-p position: WNL or retruisve Facial keratinized tissue: adequate OVerbite: will allow facial incisor movement Overjet: will allow facial incisor movemnt
30
Arch expansion consider if
``` Skeletal class I Dental class I or E to E Dental all teeth present clinically or radiographically ```
31
Active lingual arch consider if
``` Lower anterior crowding best for faciolingula descirpeancies Facial tipping of incisors NOT good for rotations May increase the possibility of second molar impaction Stability unknown ```
32
Lip Bumpers
Lower antior and or buccal segment crowing Best for faciolingual discrepancies Facial tipping of incisors/migration NOT good for rotation Principles of equilibrium theory apply May increase the possibility of second molar impaction Stability unknown
33
JBanded bonded fixed appliances
Lower anterior and or buccal segment crowding Tipping and bodily movements are possible ROTATIONCS CAN BE TREATED Stability unknown
34
Headgear
Mxiallry arch only Buccal segment crowding Molar movement control Require cooperation
35
Severe generalized space discrepancy >4-5 mm per arch
Extraction based on crowding and protrusion 14mm opens up
36
Serial extractions >10 mm per arch
``` Indications: Class I Good facial form Sever space shortage Early loss of primary canines Gingival defects Impaction ```
37
Serial extraction advantage
``` spontaneous incisor alignment Improved gingiva IMproved hygiene Improved psych Better canine position Reduced treatment time Reduced retention time Better stability ```
38
Serial extraction disadvantages
``` Incisor lingual tipping Deep bite Reduced vertical growth and alveolar development Poor facial esthetics Requires future treatment Remainein teeth may not erupt Tongue habntis develop ```
39
Serial extraction usual sequence
Primary canine Primary first molar First premolar
40
Serial extraction principle
Extraction of primary teeth to facilitate alignment of the erupted permanent teeth and encourage eruption of the premolars that will be extracted
41
Moderalete localized space dsicrepeancy < 3mm per quadrant
Space regainging
42
Space regaining
Multiple causes Adhere to maximum space loss amounts Use reliable appliances
43
Space regaining permanent molar ectopic eruotpjin
Maxillary arch Painless Often self correct If primary molar is lost space loss can be dramatic and beyond the mnoderate localized discrepancy
44
Space regaining when there is not successor
When the succednanous premolar is missing careful planning and good timin can lead to beneficial substitution
45
Band and spring
Helps tip molars back to allow eruption
46
Bonded spring
On first and second molars
47
Band and spring biomechanics
Single for not throug Cres Uncontrolled distal crown tip
48
Hawley with finger spring biomechanics
Single force not through Cres | Uncontrolled distal tip
49
Nance can be used for space regaining
Tipping and bodily movement
50
OPen coil spring
Reciprocal force Applicable buccal to Cres Produces rotation of teeth Forces on molar Distal force and moment production rotation
51
LLHA can also be used
For space regaining
52
Referral
Palatal anchorage appliances Headgear Extraction
53
Distalizing appliance
Distal Face on palatal side at level near Cres but still not in 3D through Cres Moves teeth 1 mm per month Moves anterior
54
Mini screw supported dsitalziing appliance
Won’t move anterior teeth | No acrylic reduce tissue irritation reduced compliance no loss of anterior anchorage

Ortho Part B (4 decks)

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